Improvement in tender for heating and delivering metal bars



2 Sheets--Sheet 1.

S. A. DARRAOH. I TENDER FOR HEATING AND DELIVERING METAL BARS. No.77,006. Patented Apr. 21, 1868.

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2 Sheets-Sheet 2. V

S. A. DARRAGH. TENDER FOR HEATING AND DELIVERING METAL BARS. No. 77,006.

Patented Apr. 21, 1868.

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miter .tstrs S. A. DARRA'GH', OF NEWBURG, NEW YORK.

Letters Patent No. 77,0'o, dated April 21, 1868.

at: 5x11221111: ttftrt'tll tn infirm Eaters emu min-making pan of itsarms.

TO, ALL'wHo'M IT MAY concnnnr v v I Be it known that I, S. A. DABBACH,of Newhurg,'in'the county of Orange, and in the State of New York,have'invcnted anew and improved Furnace and Tender for Heating andDelivering Metal Bars; and I; do

hereby declare, that the following is a full, clear, and exactdescription thereof, which will enable ,those skilled in the art to makeand use the same, reference .heing'had to the accompanying drawings,forming part of this specification, in which drawing i Figure 1represents a longitudinal section of this invention, the line ma, fig.2, indicating the plane 'of scctio'ns Figure 2 is a horizontal sectionthereof, taken in theplane indicated by the line y y, figil.

Figure 3 is a detached section of the feed-bar.-

Similar lettersindicate corresponding parts, H g p A represents myfurnace, which is composed of the ash-pun- B and; the fire-pot Saidfire-pot ,rests on the top edge of, the ash-pan, and it-is providedwitha grate, a, and with asocket, b, which rechives a pivot, c, on;which the fire-pot revolves. This pivot projects from the topcf-a'standard,'which rises fi omthe bottom of the ash-p an; The fire-potis made of a cast-iron jacket, lined with fire-brick, and it isc'o'vrdby a bonnet, D,

which, in practice, will be suspended from chains, so that it can bereadily raised and lowered.

The fuel is introduced through a pipe, E i'rom above, and fromthe bonnetemanates a pipe,"F, which serves to carry of the smoke. The air which isrequired to support the combustion asses in from below through the gratea. From the periphery of thefire-pot pi'ojects a series of pins, 01, wich are acted on by a hinged reciprocating latch, 'e, so that anintermittentrotarymotion is imparted to'the fire-pot.

' The latch e is hinged to aslide, f, to which a reciprocating motion isimparted by acam, g, which is secured to the circumference of a drum, G,mounted'on a shaft, H, to which a revolving motion is imparted by anysuitable power. As the slide is pnshed out in the direction of the arrowmarked on it in fig. 2, the latchdrops over one of the pins din the firepot, aud as the slide recedes, the fire-pot is caused to revolve, I p

In the side of the fire-pot is a series of holes, It, at equal distancesapart, and through these holes the bars to be heated are introduced.These holes are at such a depth below the upper edge of the furnace thatthe bars or blanks, on being introduced into said holes, are surroundedon all sides by the incandescent fuel in the furnace, and that they areuniformly and economically heated to the desired white heat. v

These bars are placed into -a box, I, to which a transverse shakingmotion is imparted by means of a com,

2', which projects from the driving-shaft H, and which acts on a lever,j, (see fig. 3,) whichis connected to the box I, and the upper end ofwhich is pressed up against the shaft H by a spring, Ia. When the comeacts on the lever j, ,the bar I is'moved in the direction of the arrowmarked near it in fig. 8, and one of the bars after the other drops downinto a cavity, Z, in the platform which supports the box. In said cavityis fitted a pusher,- m, to which a reciprocating motion is imparted by acam, 11, onthe drum G, and the rotary motion of the firepot is so timedthat one of the holes, h, in its sides, comes opposite the cavity 1whenever the pusher m begifis to move forward in the direction of-thearrow marked thereon-in fig. 2, and the bar, which has been deposited inthe cavity l, is pushed into thehole of thc fire-pot.

As the motion of-the apparatusprogresses, one hole after the other inthe fire-pot receives its bar, and each bar is carried round with thefire-pot until it arrives opposite the discharge-mechanism. During thistime the bar is heated.

The discharge-mechanism consists of two spring-jaws a, which are pivotedto a slide, 12, to which a reciproa eating motion is imparted by the cam'12. This cam acts on a pivot g, which projects from the secondary slide1', which is situated on'the top of, the main slide p, and theinne'r endof which forms a. wedge, r.

' In moving backin the directionof the arrow marked on the slide r infig. 2, the two slides are connected to each other by a spring-latch, s,which is secured to the main slide, and which catches over a pin, a,project ing from the secondary slide, and in moving forward in thedirection opposite to said arrow, the two slides are aconnected by asprihg-iatch, t, which is attached to the main slide, and catches over-apin, t, projecting from ithe secondary slide.

When the main slide has reached the rear end of its stroke, thespring-latch s strikes a stop, it, and the secondary slide isdisengeged,,so that it can move back far enough to withdraw the wedge rfrom between the shanks of the jaws o, and said jaws are thrown open bythe action of their springs. At the same time the pin t is thrownunderthe latch t, and both slides begin their inward stroke inconjunctionlBut when the jaws o have'come closeup to the periphery of the fire-pot,the latch it strikes a stop, 2:, whereby it is raised so as to disengagethe slide 1' from the mainslide p, and as the motion of'thecam proceeds,the secondary slide r centinues its motion, and the wedger' is forcedbetween the shanks of the jaws a, causing them to close upon the bar,which projects from the fire-pot, and which at that moment has arrivedin the proper position to bc'grasped by said jaws. .After the-jaws havebeen closed upon the bar, the two slides reeede, having been lockedtogether by thelatch s, and the heated bar is withdrawn from thefurnace.

When the main slide has reached the .rear end of its stroke, thesecondary slide rccedes'stillfurther, as previously described, the wedger is withdrawn from between the shanks of the jaws, tbejaivs open, andthe heated bar drops down on the chute K, which leads to a bolt-headingmachine,nr to any other mechanism where said heated bars are to hefurther operated upon. a

i It is obvious that the properheatingof the bars depends principallyupon the construction of the furnace and upon the position of the holes71. 'In' an open furnace, have not succeeded to produce the requiredheat, and -I have therefore covered my furnace with the bonnet D,whereby the draught is increased and the heat is confined in thefurnace, and by placing the. holes hat a certain depth below the topedge of the furnace, the bars, on being. introduced into the furnace,are surrounded by the incandescent fuel, and they are readily heated tothe required temperature, as previously stated And, furthermore, bygiving to the box I a transverse shaking motion, the bars are causedto'drop down before the pushernvithout fail, and the operation of thefurnace is rendered regular.

By 'this apparatus the operation of heating metal bars and deliveringthe same to a bolt-heading machine, or to any other mechanism, ismaterially simplified and rendered entirely automatic, so that nofurther attention is required, except to keep up a'preper supply of barsto the feed-hox I, and a requisite supply of fuel to the fire-pot.

What I claim as new, and desire to secure by Letters Patent, is-- 1.,The arrangement of a revolving furnace, A, provided with holes h in itssides, and covered with a bonnet, D, in combination with the mechanismdescribed for introducing and removing the bars,-substantially as andfor the purpose described.

2. The devices herein described for giving to the feed-box I,.containingthe blanks, a transverse shaking motion, substantially asand for thepnrpose set forth.

3. The latches a t andpins s t, in combination with the jaws o, wedge1", slides r, and revolving fire-pot 0, all constructed and operating-inthe manner-end for the purpose herein shown 'and described.

s. A. Daemon.

Witnesses Gso. J. Gsnsnrxsnn, D. B. Wmnu'msos.

